187 



the integuments, and having a few orange-coloured patches on the posterior 

 part, and on the basal joints of the last 3 pairs of pereiopoda, oephalon finely 

 dotted with whitish and brownish pigment, which, however, does not form 

 any distinct ramifications. Length of adult female scarcely exceeding <> mm. 



Ecmarfc. On going over the rather large material of J7//W/*- Gai- 

 nutrdii collected off the Norwegian coast in different places, and at different 

 times, I have been aware of this very nearly allied, though apparently distinct 

 species, and quite recently, I have had an opportunity of examining it also 

 in the living state. From B. GaimrmUi, it may be readily distinguished not 

 only by its much inferior size, but also by the much smaller corneal lenses, 

 by the distinctly angular inferior corners of the front, the different mutual 

 relation in length of the antennae, and finally by the want of distinct pig- 

 mentary ramifications on the cephalon. 



Ocrnrrci/fr. - As the species was formerly confounded with B. Gai- 

 mardii, I am at present unable to state, with certainty, the several places 

 in which the species probably occurred, though I believe them to have belonged 

 either to the south or west coast of Norway. Off the coast of Finmark it 

 seems, in fact, to be wholly absent. For not even a single specimen could 

 be detected among a vast material of Bi/llix Gaimai'dn collected by Mr. 

 Schneider off that part of our country, and kindly sent to me for examina- 

 tion. As mentioned above, I have, quite recently, observed this species in 

 a living state. It occurred only in a single locality, at the entrance of the 

 Skjornfjord, outer part of the Trondhjemsfjord, in a depth of 40 to 60 fathoms, 

 but here rather abundantly. 



17. Byblis erythrops, GK 0. Sars. 



(PI. 65, fig. 3). 

 Byblis erytlirops, G. O. Sars, Oversigt af Norges Crustaoeer I, p. 109, PI. 6, fig. ;'>. 



Body rather slender and highly compressed. Cephalon with tin- 

 frontal part transversely truncated at the tip, inferior corners distinctly pro- 

 jecting. First pair of coxal plates obliquely expanded distally, and densely 

 fringed with rather long setse. Last pair of epimeral plates of metasome 

 nearly rectangular, lateral corners rounded off. Corneal lenses very small, 

 and but little refractive, the lower pair placed at some distance from the 

 inferior corners of the front; ocular pigment bright red. Antennae rather 

 elongated, and less unequal than in the preceding species; the superior ones 

 but little shorter than the inferior, with the peduncle reaching considerably 

 beyond the penultimate peduncular joint of the latter, nagellnm more than 



